EP 0255361 B1 19930519 - QUARTZ CRYSTAL FOR SURFACE ACOUSTIC WAVE DEVICE
Title (en)
QUARTZ CRYSTAL FOR SURFACE ACOUSTIC WAVE DEVICE
Publication
Application
Priority
US 89123686 A 19860729
Abstract (en)
[origin: US4670681A] An ST cut quartz crystal for surface acoustic wave device application defined by the Euler angles lambda ( lambda ) equal about 0 DEG , mu ( mu ) equal about 132.75 DEG and with an acoustic wave propagation direction theta ( theta ) equal about plus or minus 25 DEG .
IPC 1-7
IPC 8 full level
G10K 11/36 (2006.01); H03H 9/02 (2006.01)
CPC (source: EP US)
H03H 9/02551 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
US 4670681 A 19870602; DE 3785893 D1 19930624; DE 3785893 T2 19930826; EP 0255361 A2 19880203; EP 0255361 A3 19890614; EP 0255361 B1 19930519; JP S63120511 A 19880524
DOCDB simple family (application)
US 89123686 A 19860729; DE 3785893 T 19870729; EP 87306707 A 19870729; JP 18789287 A 19870729